System and method for nitriding components of aftertreatment system

Abstract

A method for nitriding of at least one component of an aftertreatment system is provided. The method includes passing heated gases through the at least one component of the aftertreatment system. The method also includes heating the at least one component, based on the passage of the heated gases. The method further includes dosing a reductant into the at least one component. The method includes forming a nitride layer on an inner surface of the at least one component, based on the passage of the heated gases and the dosing of the reductant. The method also includes controlling the formation of the nitride layer on the at least one component based on adjusting at least one of the passage of the heated gases or the dosing of the reductant.

What is claimed is: 
     
       1. A method for nitriding of at least one component of an aftertreatment system, the method comprising:
 assembling the at least one component with the aftertreatment system; 
 passing heated gases through the aftertreatment system; 
 heating the at least one component, based on the passage of the heated gases; 
 dosing a reductant into the at least one component; 
 forming a nitride layer on an inner surface of the at least one component, based on the passage of the heated gases and the dosing of the reductant; and 
 controlling the formation of the nitride layer on the at least one component based on adjusting at least one of the passage of the heated gases or the dosing of the reductant. 
 
     
     
       2. The method of  claim 1  further comprising:
 selecting a temperature of the heated gases prior to passing the heated gases through the at least one component based on the nitride layer to be formed. 
 
     
     
       3. The method of  claim 1 , wherein the heated gases include exhaust gases, nitrogen gases, carbon dioxide gases, or combinations thereof. 
     
     
       4. The method of  claim 1 , wherein the reductant includes ammonia. 
     
     
       5. The method of  claim 1  further comprising:
 coupling the assembled components of the aftertreatment system with an engine prior to passing the heated gases therethrough. 
 
     
     
       6. The method of  claim 5  further comprising:
 mounting the coupled components onto a machine prior to passing the heated gases therethrough. 
 
     
     
       7. The method of  claim 6 , wherein the passing step includes:
 passing exhaust gases through the coupled components of the aftertreatment system. 
 
     
     
       8. The method of  claim 7  further comprising:
 receiving a signal indicative of a temperature of the exhaust gases exiting the engine of the machine; 
 comparing the temperature with a predetermined threshold; and 
 triggering the formation of the nitride layer on the coupled components, based on the comparison. 
 
     
     
       9. The method of  claim 8  further comprising:
 adjusting the dosing of the reductant based on the comparison. 
 
     
     
       10. A system for nitriding of at least one component of an aftertreatment system, the system comprising:
 a gas source configured to pass heated gases through an assembled aftertreatment system; 
 a reductant dosing module configured to dose a reductant into the at least one component; and 
 a nitriding control module communicably coupled to the gas source and the reductant dosing module, the nitriding control module configured to:
 adjust at least one of the passage of the heated gases or the dosing of the reductant; and 
 control the nitriding of the at least one component based on the adjustment. 
 
 
     
     
       11. The system of  claim 10 , wherein the heated gases include exhaust gases, nitrogen gases, carbon dioxide gases, or combinations thereof. 
     
     
       12. The system of  claim 10 , wherein the reductant includes ammonia. 
     
     
       13. The system of  claim 10 , wherein the gas source includes an engine. 
     
     
       14. The system of  claim 13  further comprising:
 a temperature sensor positioned upstream of the aftertreatment system, the temperature sensor configured to generate a signal indicative of a temperature of exhaust gases exiting the engine. 
 
     
     
       15. The system of  claim 14 , wherein the nitriding control module is further configured to:
 receive the signal indicative of the temperature of the exhaust gases; 
 compare the temperature with a predetermined threshold; and 
 trigger a formation of a nitride layer on an inner surface of the at least one component based on the comparison. 
 
     
     
       16. The system of  claim 15 , wherein the nitriding control module is further configured to:
 adjust the dosing of the reductant based on the comparison. 
 
     
     
       17. A machine comprising:
 an engine; 
 an aftertreatment system connected to an exhaust conduit of the engine; 
 a temperature sensor positioned upstream of the aftertreatment system, the temperature sensor configured to generate a signal indicative of a temperature of exhaust gases exiting the engine; 
 a reductant dosing module coupled to the exhaust conduit upstream of the aftertreatment system; and 
 a nitriding control module communicably coupled to the temperature sensor and the reductant dosing module, the nitriding control module configured to:
 receive the signal indicative of the temperature of the exhaust gases; 
 compare the temperature with a predetermined threshold; and 
 trigger a formation of a nitride layer on an inner surface of the aftertreatment system based on the comparison. 
 
 
     
     
       18. The machine of  claim 17 , wherein the nitriding control module is further configured to:
 adjust a dosing of a reductant based on the comparison; and 
 control the formation of the nitride layer on the aftertreatment system based on the adjustment. 
 
     
     
       19. The machine of  claim 17 , wherein the reductant includes ammonia.